Transitioning a standards-based card into a high availability backplane environment

• US 6,614,752 B1
• Filed: 06/08/1999
• Issued: 09/02/2003
• Est. Priority Date: 06/08/1999
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Taylor, Michael J., Colton, Michael P., Parrish, Brent K.
• Primary Examiner(s): Nguyen, Steven
• Assistant Examiner(s): DUONG, DUC T
• Application Number:
  US09/328,172
• Time in Patent Office: 1,547 Days
• Field of Search: 370/217, 370/218, 370/219, 370/220, 370/221, 370/227, 370/243, 370/244, 370/245, 370/248, 370/249, 370/250, 370/251, 370/252, 370/225, 370/228, 340/825.06, 340/825.16, 714/2, 714/5, 714/10, 714/25, 714/30, 714/43, 714/44, 710/313, 710/314
• US Class Current: 370/217
• CPC Class Codes: H04L 41/0659 by isolating or reconfiguring faulty entities
• CPC Class Codes: H04Q 2213/13003 Constructional details of switching devices
• CPC Class Codes: H04Q 2213/1308 Power supply
• CPC Class Codes: H04Q 2213/13162 Fault indication and localisation
• CPC Class Codes: H04Q 2213/13163 Fault alarm
• CPC Class Codes: H04Q 2213/13166 Fault prevention
• CPC Class Codes: H04Q 2213/13167 Redundant apparatus
• CPC Class Codes: H04Q 2213/13292 Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/13299 Bus
• CPC Class Codes: H04Q 2213/13305 Transistors, semiconductors in general
• CPC Class Codes: H04Q 2213/1332 Logic circuits
• CPC Class Codes: H04Q 2213/13322 Integrated circuits
• CPC Class Codes: H04Q 2213/13349 Network management
• CPC Class Codes: H04Q 2213/1336 Synchronisation
• CPC Class Codes: H04Q 2213/13362 Asynchronous systems
• CPC Class Codes: H04Q 3/0075 Fault management techniques

Abstract

A telecommunications device includes a backplane having an associated high availability backplane environment. A transition card coupled to the backplane helps transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment. The transition card may also help transition either a Computer Telephony or a Serial Telephony serial data bus into the high availability backplane environment. In a more particular embodiment, the transition card may support a control bus, a synchronization bus, a reset bus, an isolate bus, and a power bus that each support at least one high availability characteristic not associated with the PCI bus. In another more particular embodiment, the transition card may provide at least some redundancy, hot insertion, fault detection, fault isolation, and fault recovery capabilities not associated with the PCI bus.

Claims

1. A telecommunications device, comprising:

a backplane with an associated high availability backplane environment; and

a transition card coupled to the backplane, the transition card being operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment, wherein the transition card supports a control bus, a synchronization bus, a reset bus, an isolate bus, and a power bus that each support at least one high availability characteristic not associated with the PCI bus.

2. A telecommunications device, comprising:

a backplane with an associated high availability backplane environment; and

a transition card coupled to the backplane, the transition card being operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment, wherein the standards-based card further supports a serial data bus selected from the group consisting of a Computer Telephony bus and a Serial Telephony bus, the transition card further operable to transition the serial data bus into the high availability backplane environment.

3. The device of claim 2, wherein the device is a time-division multiplexing (TDM) switching unit and the backplane is a TDM backplane.

4. The device of claim 2, wherein the transition card provides at least some redundancy, hot insertion, fault detection, fault isolation, and fault recovery capabilities not associated with the PCI bus.

5. The device of claim 2, wherein the standards-based card further supports an INTEL-based processor running a WINDOWS operating system, the transition card further operable to transition the processor and operating system into the high availability backplane environment.

6. The device of claim 2, wherein the transition card further comprises a plurality of time-division multiplexing (TDM) data buses and associated applicationspecific integrated circuit (ASIC) devices, each ASIC device being operable to switch data from the serial data bus and to communicate the switched data to one or more other cards in the device using the associated TDM data bus and the backplane, wherein a fault associated with one ASIC device or its associated TDM data bus is isolated from the other ASIC devices and their associated TDM data buses.

7. The device of claim 2, further comprising first and second control buses coupling the transition card to one or more other cards in the device, the device operable to switchover to the second control bus in response to a fault associated with the first control bus and to isolate the source of the fault.

8. The device of claim 2, further comprising the standards-based card, the standards-based card and the transition card operable to be coupled together to form a field replaceable unit.

9. A telecommunications device, comprising:

a backplane with an associated high availability backplane environment;

a transition card coupled to the backplane, the transition card being operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment; and

at least one event bus coupling the transition card to one or more other cards in the device, the device operable to detect a fault associated with the event bus and to isolate the source of the fault, wherein.the event bus is selected from the group consisting of;

a reset bus;

an isolate bus; and

a power bus.

10. A telecommunications device, comprising:

a backplane with an associated high availability backplane environment;

a transition card coupled to the backplane, the transition card being operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment, wherein the transition card further comprises a power core operable to receive first and second power inputs and to sum the inputs to supply power to components of the transition card, the components operable to continue operating substantially uninterrupted despite loss of either the first or the second input.

11. A transition card for operation in a telecommunications device having a backplane and an associated high availability backplane environment, wherein:

the transition card is coupled to the backplane; and

the transition card is operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment, wherein the transition card supports a control bus, a synchronization bus, a reset bus, an isolate bus, and a power bus that each support at least one high availability characteristic not associated with the PCI bus.

12. A transition card for operation in a telecommunications device having a backplane and an associated high availability backplane environment, wherein:

the transition card is coupled to the backplane; and

the transition card is operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high avai lability backplane environment, wherein the standards-based card further supports a serial data bus selected from the group consisting of a Computer Telephony bus and a Serial Telephony bus and the transition card is further operable to transition the serial data bus into the high availability backplane environment.

13. The card of claim 12, wherein the device is a time-division multiplexing (TDM) switching unit and the backplane is a TDM backplane.

14. The card of claim 12, wherein the transition card provides at least some redundancy, hot insertion, fault detection, fault isolation, and fault recovery capabilities not associated with the PCI bus.

15. The card of claim 12, wherein:

the standards-based card further supports an INTEL-based processor running a WINDOWS operating system; and

the transition card is further operable to transition the processor and operating system into the high availability backplane environment.

16. The card of claim 13, wherein:

the transition card further comprises a plurality of time-division multiplexing (TDM) data buses and associated application-specific integrated circuit (ASIC) devices, each ASIC device operable to switch data from the serial data bus and to communicate the switched data to one or more other cards in the device using the associated TDM data bus and the backplane; and

a fault associated with one ASIC device or its associated TDM data bus is isolated from the other ASIC devices and their associated TDM data buses.

17. The card of claim 12, wherein:

the transition card comprises a control bus monitor and is operable to couple to first and second control buses; and

the monitor is operable to detect a fault associated with the first control bus and to help initiate a switchover to the second control bus in response to the fault.

18. The card of claim 12, wherein the transition card is operable to couple to the standards-based card to form a field replaceable unit.

19. A transition card for operation in a telecommunications device having a backplane and an associated high availability backplane environment, wherein:

the transition card is coupled to the backplane;

the transition card is operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment;

the transition card is operable to couple to an event bus;

the transition card must receive an event code and an enabling event strobe to execute a corresponding event;

the transition card is operable to report a fault if the event strobe is not received in association with the event code; and

the event bus is selected from the group consisting of a reset bus, an isolate bus, and a power bus.

20. A transition card for operation in a telecommunications device having a backplane and an associated high availability backplane environment, wherein:

the transition card is coupled to the backplane;

the transition card is operable to transition a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment, wherein the transition card further comprises a power core operable to receive first and second power inputs and to sum the inputs to supply power to components of the transition card, the components operable to continue operating substantially uninterrupted despite loss of either the first or the second input.

21. A method for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the method comprising:

transitioning messages received from a Peripheral Component Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment; and

transitioning a serial data bus associated with the standards-based card, and selected from the group consisting of a Computer Telephony bus and a Serial Telephony bus, into the high availability backplane environment.

22. The method of claim 21, wherein the backplane is a TDM backplane and the device is a time-division multiplexing (TDM) switching unit.

23. The method of claim 21, further comprising using a high availability capability not associated with the PCI bus, wherein the capability is selected from the group consisting of redundancy, hot insertion, fault detection, fault isolation, and fault recovery.

24. The method of claim 21, further comprising transitioning an INTEL-based processor running a WINDOWS operating system into the high availability backplane environment.

25. The method of claim 21, further comprising:

switching data from the serial data bus using an application-specific integrated circuit (ASIC) device an associated time-division multiplexing (TDM) data bus;

communicating the switched data in the high availability backplane environment; and

isolating a fault associated with the ASIC device or its associated TDM data bus from one or more other ASIC devices and associated TDM data buses.

26. The method of claim 21, further comprising:

detecting a fault associated with a first redundant control bus; and

helping to initiate a switchover to a second redundant control bus in response to the fault.

27. The method of claim 21, further comprising coupling the standards-based card to a transition card to form a field replaceable unit.

28. A method for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the method comprising:

transitioning messages received from a Peripheral Component Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment;

executing an event if a corresponding event code and enabling event strobe are received;

reporting a fault if the event strobe is not received in association with the event code; and

wherein the event is selected from the group consisting of a reset event, an isolate event, and a power event.

37. The method of claim 28, further comprising coupling the standards-based card to a transition card to form a field replaceable unit.

29. A method for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the method comprising:

transitioning messages received from a Peripheral Component Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment;

receiving first and second power inputs;

summing the inputs to supply power to components of the transition card; and

the components continuing to operate substantially uninterrupted.despite loss of either the first or the second input.

38. The method of claim 29, further comprising coupling the standards-based card to a transition card to form a field replaceable unit.

30. Logic for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the logic encoded in media and operable to:

transition messages received from a Peripheral Component Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment; and

transition a serial data bus associated with the standards-based card, and selected from the group consisting of a Computer Telephony bus and a Serial Telephony bus, into the high availability backplane environment.

31. The logic of claim 30, wherein the backplane is a TDM backplane and the device is a time-division multiplexing.(TDM) switching unit.

32. The logic of claim 30, further operable to use a high availability capability not associated with the PCI bus, wherein the capability is selected from the group consisting of redundancy, hot insertion, fault detection, fault isolation, and fault recovery.

33. The logic of claim 30, further operable to transition an INTEL-based processor running a WINDOWS operating system into the high availability backplane environment.

34. The logic of claim 30, further operable to:

switch data from the serial data bus using an application-specific integrated circuit (ASIC) device an associated time-division multiplexing (TDM) data bus;

communicate the switched data in the high availability backplane environment; and

isolate a fault associated with the ASIC device or its associated TDM data bus from one or more other ASIC devices and associated TDM data buses.

35. The logic of claim 30, further operable to:

detect a fault associated with a first redundant controlbus; and

help to initiate a switchover to a second redundant control bus in response to the fault.

36. The logic of claim 30, further operable to couple the standards-based card to a transition card to form a field replaceable unit.

39. Logic for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the logic encoded in media and operable to:

transition messages received from a Peripheral Component Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment;

execute an event if a corresponding event code and enabling event strobe are received;

report a fault if the event strobe is not received in association with the event code; and

wherein the event is selected from the group consisting of a reset event, an isolate event, and a power event.

40. Logic for transitioning a standards-based card into a high availability backplane environment of a telecommunications device, the device having an associated backplane, the logic encoded in media and operable to:

transition messages received from a Peripheral Component. Interconnect (PCI) administrative bus associated with the standards-based card to control bus messages for communication in the high availability backplane environment;

receive first and second power inputs;

sum the inputs to supply power to components of the transition card; and

the components continuing to operate substantially uninterrupted despite loss of either the first or the second input.

41. A transition card for operation in a telecommunications device having a backplane and an associated high availability backplane environment, wherein:

the transition card is coupled to the backplane; and

the transition card comprises means for transitioning a standards-based card supporting a Peripheral Component Interconnect (PCI) administrative bus into the high availability backplane environment and means for transitioning a serial data bus associated with the standards-based card, and selected from the group consisting of a Computer Telephony bus and a Serial Telephony bus, into the high availability backplane environment.